JPH1077042A - Pallet made of corrugated fiberboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pallet made of corrugated fiberboard which is simple in construction and lightweight and can be regenerated and in which anisotropy in strength between the vertical direction and the horizontal direction can be reduced so that physical strength can be improved. SOLUTION: A proper number of rectangular through holes 6 are formed in a bottom panel 2 and a spacer 3 is formed in such a manner that an outermost side sheet is partially cut off from a cylindrical body along the entire periphery thereof to form an inner peripheral protrusion 5, which protrusion 5 is inserted into the hole 6 formed in the bottom panel, and a cutoff surface of an outer peripheral step 4 is brought into contact with the inner surface of the bottom panel 2. And the protrusion 5 is fitted into the hole 6 of the panel 2 and the cutoff surface of the step 4 is brought into contact with the inner surface of the panel 2 and a non-cutoff surface of the outermost sheet is abutted against a top panel 1 so as to be bonded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet made of a corrugated ball, comprising a corrugated ball and having reduced vertical and horizontal strength anisotropy and improved physical strength. ,
In particular, the present invention relates to a recyclable corrugated ball pallet having improved impact strength in the lateral direction and low production cost.

[0002]

2. Description of the Related Art Materials, such as raw materials and commodities, have been used in containers to meet the demands for speeding up and rationalizing so-called logistics such as handling, cargo handling, transportation, and storage, regardless of their weight.
It has been unitized by means of resizing and pallet systems. On the other hand, the increase in international transportation of goods has accelerated the spread of such unit transportation methods on a global scale, but at the same time, recycling of transportation and packaging materials has been demanded from the viewpoint of protection of natural resources and environmental protection. It is expected that international regulations will be strictly controlled by legislation in the near future.
A pallet is a platform used to unitize and load a certain amount of cargo and goods. It is also called a moving platform, and loading, cargo handling, movement and transportation are mainly forklifts, pallet trucks, etc. It is not an exaggeration to say that the speed is increased and storage by the rack warehouse is indispensable for streamlining distribution.

[0003] Pallets are classified into flat, box, and frame shapes according to their shapes, and are classified according to the materials used, such as wooden, steel, resin, and fiberboard. Among them, wooden pallets are widely used because of their low production cost and relatively light weight.However, in international transportation, fumigation is required for phytosanitary reasons, and raw wood is used due to depletion of forest resources. There are some deficiencies and disadvantages such as limited availability. In order to solve such defects and disadvantages and at the same time enable recycling, a top plate on which the luggage is placed, a bottom plate on the opposite side, and a girder portion (hereinafter referred to as a spacer for convenience) which connects these are corrugated. -It is composed of a sheet, the top plate and the bottom plate are composed of a stepped ball sheet, and the spacer is composed of a paper tube, and each component is joined and fixed with an adhesive. Ball-paper pallets have been developed and marketed, and some are in practical use.

[0004] However, such a well-known conventionally known ball is used.
Paper pallets have sufficient strength to support the weight of the cargo to be placed, but the adhesives that can be used for recycling are naturally limited, so the forklift trucks A pallet that is vulnerable to impacts or loads from a certain direction or more, such as a fork butt, has considerable anisotropy in the strength of the pallet itself, or a pallet with uniform strength and low anisotropy Significant problems, such as an inevitably complicated structure and a complicated manufacturing process, which inevitably increase the cost, have not been solved.

[0005]

The inventor of the present invention has made intensive studies in view of such a situation, and as a result, the present inventor has found that the present invention can withstand not only a vertical load but also a horizontal shock or a load of a certain level or more. We have succeeded in developing a recyclable pallet with sufficiently high physical strength, reduced strength anisotropy, simple structure and easy to manufacture and low cost.

[0006]

That is, according to the present invention,
Each of the top plate (1), the bottom plate (2) and the spacer (3) is a stepped pallet made of a stepped ball sheet. Alternatively, a through hole (6) having an appropriate shape is formed; after the step ball sheet is wound a plurality of times in the longitudinal direction, and is wrapped around and adhered to form a substantially square cross section or an appropriately shaped cylindrical shape. , Outermost sheet
An appropriate number of parts are cut out over the entire circumference of the cylindrical object, and the resulting inner peripheral projection (5) fits into the through hole (6) formed in the bottom plate and the outer peripheral paragraph (4). The spacer (3) is formed so that the cutout surface of the spacer (3) comes into contact with the inner surface of the bottom plate; the cutouts of the inner peripheral projection side surface (7) and the outer peripheral paragraph (4) of the spacer (3). After the adhesive is applied to the surface and the opposite non-cut surface, the inner peripheral projection is fitted into the through hole (6) of the bottom plate (2) and the notch surface of the outer paragraph (4) is inserted into the through hole. By abutting around the periphery and abutting the non-notched surface against the top plate (1) and bonding and fixing each other, the anisotropy in the vertical and horizontal directions is reduced, and the physical strength is reduced. An improved corrugated ball pallet is provided. Since the pallet made of corrugated balls according to the present invention has such a simplified structure, the manufacturing process is simple and the cost is low.

In the pallet made of corrugated balls provided according to the present invention as described above, first, a corrugated ball sheet having appropriate strength is cut into a predetermined same size to obtain the top plate 1 of the pallet. And a bottom plate 2, and an appropriate number of through holes having an appropriate shape according to a desired pallet strength are formed in the bottom plate. Further, after cutting the same step ball sheet into a predetermined size, the sheet is wound in a longitudinal direction a plurality of times in accordance with a desired pallet strength, wound around and adhered, and then pressed or not pressed so that the cross section is substantially square or appropriate. A part of the outermost step ball seat is cut out over the entire circumference of a plurality of cylindrical objects so as to fit into a through hole formed in the bottom plate so that a spacer is formed. create.
After applying the plurality of spacers 3 thus prepared to the inner peripheral protruding part side surface (7), the cutout surface of the outer peripheral paragraph part (4) and the opposing non-notched surface, the inner peripheral protruding part is formed. Is fitted into the through hole (6) of the bottom plate (2), the notched surface of the outer peripheral section (4) is brought into contact with the inner surface of the bottom plate, and the non-notched surface is abutted against the top plate (1) and adhered. For example, the top plate (1), the bottom plate (2) and the spacer (3) are joined and fixed to each other with an adhesive, and thus the corrugated board of the present invention.
Pallets made of metal.

[0008] The three elements of the corrugated ball pallet according to the present invention may be any type of commercially available cardboard pallets, and may be appropriately selected in consideration of characteristics such as physical strength required for the pallets. It is good, but on the top plate and the bottom plate,
In consideration of the strength, it is preferable to use a double-sided step ball or a tri-wall step ball, and to use a double-sided step ball for the spacer. The spacer may have any shape of a rectangular parallelepiped, a square or a circle in cross section, and may have any shape of a through hole formed in the bottom plate. Further, a through hole similar to the bottom plate may be formed in the top plate, and in this case, the spacer may be formed so as to be fitted and bonded to both the top plate and the bottom plate.

The adhesive used for joining and fixing the three elements of the corrugated ball pallet to each other includes:
Hot melt adhesives based on starch, dextrin, modified starch, vinyl acetate emulsion, vinyl acetate / ethylene emulsion, polyvinyl acetate, etc. are mentioned. For this purpose, an adhesive composed of starch, dextrin or modified starch is preferred. The application of the adhesive is performed by a roll coater, a flow coater, or the like according to the manufacturing process of the pallet made of corrugated balls. When a hot melt adhesive is used, various types of hot melt applicators are used. Can be used.

[0010]

As shown in FIG. 2, the bottom plate (2) and the spacer
(3) is a step ball pallet according to the present invention, which is more firmly joined and fixed by fitting bonding and butt bonding via the inner peripheral protruding portion and the outer peripheral paragraph portion of the spacer (3). The strength of the whole pallet is improved by balancing the strength in the horizontal direction with the strength in the vertical direction, and the fork is not inserted in the correct direction when loading and unloading work with a forklift truck or hand lift. Collide with-
Spacer (3) even when a certain level of impact is applied
The joining and fixing of the parts are not destroyed as in the past.
Accordingly, it is possible to speed up the cargo handling work, and at the same time, the material can be easily recycled at the destination, so that it is possible to contribute to the rationalization of physical distribution management by palletization.

[0011]

【Example】

Embodiment 1 The present invention will be described with reference to the drawings. FIG. 1 shows a spacer in which the bottom plate (2) is turned upside down, and the spacer is butt-adhered to the through-hole portion (6) formed in the bottom plate and the top plate (1) for joining and fixing. It is a partially expanded perspective view with (3). The spacer (3) is formed by winding the double-sided step ball four times in the longitudinal direction, rotating and bonding, and then pressing and forming it into a cylindrical body having a square cross section, and then forming the outermost two-layer double-sided step. A part of the ball is cut out over the entire circumference of the cylindrical body so as to fit into a through hole formed in the bottom plate of the cylindrical body. The spacer (3) thus prepared has an inner peripheral protruding portion side surface (7) and an outer peripheral paragraph portion (4). After applying the adhesive to the notch surface and the non-notch surface opposed thereto, the inner peripheral projection is fitted into the through hole (6) of the bottom plate (2), and the notch surface of the outer peripheral paragraph (4) is removed. When the top plate (1), the bottom plate (2) and the spacer (3) are brought into contact with each other around the through hole and the non-notched surface is abutted against the top plate (1), the top plate (1) is bonded with an adhesive. ) And spacer (3) are joined and fixed more firmly by butt bonding, and bottom plate (2) and spacer (3) are firmly joined and fixed by fitting adhesion and partial butt adhesion.

Embodiment 2 The same structure as that of Embodiment 1 except that a through hole is also formed in the top plate, and the top plate and the bottom plate are connected to each other by fitting and partially butt bonding. By firmly joining and fixing to (3), a pallet made of a corrugated ball with further improved mechanical strength can be obtained.

Embodiment 3 A pallet made of a corrugated ball having improved mechanical strength is obtained in the same configuration as in Embodiment 1 except that the cross section of the spacer (3) is circular.

[0014]

The pallet made of corrugated balls according to the present invention is
With the above-described configuration, the physical strength against horizontal shocks and loads is improved, and the strength is lower than that in the vertical direction, although the structure is simpler than that of a conventionally known corrugated ball pallet. The anisotropy is significantly reduced in the horizontal direction, and the overall strength is increased. In addition, since the manufacturing process is simple, the cost is low and recycling is possible, which can greatly contribute to rationalization of physical distribution by palletization.

[Brief description of the drawings]

FIG. 1 is a planer ball pallet according to the present invention having a structure described in Embodiment 1 and a spacer which is butt-adhered to a through-hole portion formed for joining and fixing and a top plate (1). It is a partially expanded perspective view with (3).

FIG. 2 is a perspective view of a corrugated ball pallet according to the present invention, having a configuration described in Embodiment 2.

FIG. 3 is a perspective view of a corrugated ball pallet according to the present invention having the configuration described in the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top plate 2 Bottom plate 3 Spacer 4 Peripheral paragraph part of spacer 5 Inner peripheral protruding part of spacer 6 Through hole formed in bottom plate 7 Side surface of inner peripheral protruding part of spacer

Claims (1)

[Claims] 1. A top plate (1), a bottom plate (2) and a spacer.
(3) In a stepped ball pallet composed of a stepped ball sheet, an appropriate number of rectangular through holes (6) are formed in the bottom plate (2); The sheet is wound around the longitudinal direction a plurality of times and is wound around and adhered to form a tube having a substantially rectangular cross section, and then an appropriate number of outermost sheets are partially cut out over the entire circumference of the tube. Then, the spacer (3) is formed so that the generated inner peripheral protruding portion (5) fits into the through hole (6) formed in the bottom plate and the cutout surface of the outer peripheral step (4) comes into contact with the inner surface of the bottom plate. Forming an adhesive on the side surface (7) of the inner peripheral protruding portion of the spacer (3), the cutout surface of the outer peripheral paragraph (4) and the non-cutout surface opposed thereto. The peripheral protrusion is fitted into the through hole (6) of the bottom plate (2), and the notched surface of the outer peripheral paragraph (4) is brought into contact with the inner surface of the bottom plate and is not notched. The characterized by bonding and fixing the respective mutually bonded against the top plate (1), the anisotropy of vertical and horizontal strength is reduced,
A corrugated ball pallet with improved physical strength.